config RT_USING_UART1
bool "Enable UART1 (PA9/10)"
default y
config RT_USING_UART2
bool "Enable UART2 (PA2/3)"
config RT_USING_UART3
bool "Enable UART3 (PB10/11)"
config RT_USING_UART4
bool "Enable UART4 (PC10/11)"
default n